Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 1)
1.
What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?
Discussion:
121 comments Page 3 of 13.
BELAL MOMIN said:
10 years ago
Because in short circuit test current flow through low resistance path & maximum amount of current flow this sc path that's why iron loss is negligible as compare with copper loss.
Swarup said:
10 years ago
kv*A = kvA.
8*2 = 16.
8*2 = 16.
Garima said:
10 years ago
In short circuit test iron loss is negligible why?
Hakim said:
10 years ago
Apparent Power (VA) = Root-square 3*V*I. That is for 3 phase transformers only.
Apparent Power (VA) = V*I. That is for single phase transformers only.
In the equation they did not mentions the type of the transformer either single or three phase.
Apparent Power (VA) = V*I. That is for single phase transformers only.
In the equation they did not mentions the type of the transformer either single or three phase.
SAKTHIMADHAN said:
10 years ago
V*A = VA.
2000*8 = 1600 VA.
KVA = 1600/1000.
KVA = 16.
2000*8 = 1600 VA.
KVA = 1600/1000.
KVA = 16.
SARANRAJ R said:
10 years ago
Generally we know that ratings of transformer is denoted as kVA then from the given:
KV = 2.
Amps (A) = 8.
Then, (kVA) = 2*8 = 16 kVA.
KV = 2.
Amps (A) = 8.
Then, (kVA) = 2*8 = 16 kVA.
Omardayah said:
10 years ago
We know that transformer has voltage and ampere.
So we have to multiply volt and amp 2V and 8A is 16's term of KVA is a unit of transformer.
So we have to multiply volt and amp 2V and 8A is 16's term of KVA is a unit of transformer.
Akshay said:
10 years ago
What is more loss in transformer?
Akshay said:
10 years ago
Can we change the rating of transformer by using some method?
Kiran said:
1 decade ago
Pf = True power/Apparent power.
Pf = Kw/Kva.
Kva = Kw/Pf.
P = v*i*cos Q = True power.
Pf for transformer is 0.95.
So P = 2000*8*0.95.
P = 15200 = kw.
Kva = 15200/0.95 = 16000 VA.
Kva = 16 KVA.
Pf = Kw/Kva.
Kva = Kw/Pf.
P = v*i*cos Q = True power.
Pf for transformer is 0.95.
So P = 2000*8*0.95.
P = 15200 = kw.
Kva = 15200/0.95 = 16000 VA.
Kva = 16 KVA.
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